Amazon offers the Tide Free & Gentle HE Laundry Detergent 48-oz. Pouch 3-Pack for $12.58. Check out via Subscribe & Save to cut the price to $11.95. With free shipping for Prime members, or spend over $25 to receive free shipping.
Note, must be logged into your Amazon account to clip coupon. You may cancel Subscribe & Save anytime after your order ships. Select the later date from the "First Delivery On" menu to get traditional S&S checkout instead of adding to your cart.
https://www.amazon.com/gp/product/B01D2ZN5LK